elct9620/mruby-go

package mruby

import "fmt"

var _ RException = &Exception{}

type RException interface {
    RBasic
    error
    SetMessage(string)
}

type Exception struct {
    object
    message string
}

func (e *Exception) Error() string {
    return e.message
}

func (e *Exception) SetMessage(message string) {
    e.message = message
}

func (mrb *State) Raise(excType RClass, message string) {
    mrb.ExceptionRaise(mrb.ExceptionNewString(excType, message))
}

func (mrb *State) Raisef(excType RClass, format string, args ...any) {
    mrb.Raise(excType, fmt.Sprintf(format, args...))
}

func (mrb *State) ExceptionRaise(excValue Value) {
    exc, ok := excValue.(RException)
    if !ok {
        mrb.Raise(nil, "exception object expected")
    }

    panic(exc)
}

func (mrb *State) ExceptionNewString(class RClass, message string) RException {
    exc := mrb.AllocException(class)
    exc.SetMessage(message)

    return exc
}